Design of the LQG Controller for Vehicle Active Suspension System Based on AHP
LUO Xin-yuan1,YANG Shi-wen2
1.College of Mechatronic Engineering, North University of China, Taiyuan 030051, China；2.College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
Abstract：Based on the Analytic Hierarchy Process (AHP), a Linear Quadratic and Gaussian distributed (LQG) controller for active suspension was designed, which could depress the body acceleration (BA), suspension working space (SWS) and dynamic tyre displacement(DTD). The 2 DOFs dynamic model of 1/4 vehicle passive and active suspension were firstly established. Then, the weighting coefficients of all performance evaluation indicators were determined by adopting to AHP and a LQG controller for vehicle active suspension system was devised by applying optimal control theory. Finally, the models were simulated and analyzed under the Matlab/Simulink environment. The simulation results comparision illustrate that with proper selection of weighting coefficients, the BA, SWS and DTD are 18.73%、22.22% and 4.76% lower than the passive suspension, the RMS of active control force is 535.3994N.
罗鑫源;杨世文. 基于AHP的车辆主动悬架LQG控制器设计[J]. , 2013, 32(2): 102-106.
LUO Xin-yuan;YANG Shi-wen . Design of the LQG Controller for Vehicle Active Suspension System Based on AHP. , 2013, 32(2): 102-106.
2013, Vol. 32 
